Priming mechanism for explosive-engines.



M. P. MITCHELL. PRIMING MECHANISM FOR EXPLOSIVE ENGINES. APPLICATION FILED MAR. 6, 1913.

1,102,285. Patented July 7, 1914.

4 SHEETS-811112121.

Attorneys.

THE Nomws PETERS CO, PHOTO-LIrHOW VIAS HING TON. D C.

M. P. MITCHELL. PRIMING MBUHANISM FOB. EXPLOSIVE ENGINES.

APPLIUATION FILED MAR. 6, 1913.

Patented July 7, 1914.

4 SHEETS-SHEET 2.

Witnesses 4 N 1/ y M Attorneys- THE NORRIS PETERS CO.. PHOTO-LITHO. WASHINGTON D C M. P. MITCHELL. PRIMING MECHANISM FOR EXPLOSIVE ENGINES. APPLIOATION FILED MAB; e, 1913.

1,102,285, Patented July 7, 1914.

Inventor,

b y I 0 Attorneys.

THE NORRIS PETER-5 C0,. FHOTQ-LITHQ, WASHINOTUN. D 1:

M. P. MITCHELL. PRIMING MEUHANISM FOR EXPLOSLVB ENGINES. APPLIOATION FILED MAR. 15, 1013.

1,102,285, Patented July 7, 191i 4 SHEETSSHBET 4.

jffi lizkiail Witnesses Inventor,

THE NORRIS PETERS 60.. PHDTD-LITHO., WASHINGTON. D. C

UNITED STATES MARY PIERSON MITCHELL, OF EATON, OHIO.

PRIMING MECHANISM FOR EXPLOSIVE-ENGINES.

Specification of Letters Patent.

Patented July *7, 1914.

Application filed March 6, 1913. 1 Serial No. 752,524.

To all whom it may concern Be it known that I, MARY 1?. Mrrcn'ntn, a citizen of the United States, residing at Eaton, in the county oflrelole and State of Ohio, have invented a new and useful Priming Mechanism for Explosivelihigines, of which the following is a specification.

This invention relates to improvements in priming mechanisms for explosive engines, the primary object of the present invention being the provision of a novel arrangement by means of which carbureted air or a fluid hydrocarbon and a proportionate amount of air may be properly injected into the select ed cylinders of the engine so that the actuation of the sparking device will cause the explosion of the introduced priming charge within the respective cylinders to start the same.

A further object of the present invention is the provision of a fluid hydrocarbon tank operably connected to the respective explosive chambers of the cylinders of the ex plosive engine and disposed to supply a priming fluid under pressure and with the proper proportion of air therewith to produce a desirable explosive charge and introduce the same into the respective cylinders of the engine, thus providing a means whereby the priming charge is introduced at the initial starting of the engine and which will dispense with the usual cranking thereof.

A still further object of the present invention is the provision of means whereby the pressure for producing the desired mixture of carbureted air for initially priming the cylinders of the engine may be supplied either by the reciprocating pistons or the engine or from the crank shaft, or by a manually operated pressure supply pump, thus providing an automatic means to maintain the necessary or desired pressure within the fluid hydrocarbon supplying tank so that the same may be properly supplied to the cylinders of theengine when the engine is at rest and it is desired to start the engine.

A still further object of the present invention is the provision of manually controlled means, whereby the selecting valves one to each cylinder of the engine are operated in unison, to direct the priming charge to the respective cylinders of the engine, the same being constructed, where :four cyl inders are used, to open two valves and close two valves orvice versa, the device when in the normal-or intermediate position closing an tour ofthe valves, such operating.

mechanism being readily accessible to the driver or chauil'cur to be readily operated from the seat oi the motor car.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arraug renient of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departingfrom the spirit of the invention.

In the (lrawings liignre 1 is a view illustrating the forward portion oi an automobile chussis, showing the radiator, dashboard and the explosive engine with the present device in operable relation thereto. Fig. 2 is a longitudinal sectional view through the fluid hydrocarbon holding and supplying tank showing the connections leading therefrom whereby the pressure fluid is supplied to the tank and too great pressure relieved, in the present instance there being shown tour supplying valves for a four-cylinder engine. Fig. 3 is a section taken on line 3----3 of Fig. 2. Fig. 4, 5 and 6 are diagrams illustrating the various positions of the valves for controlling the admission of the priming charges to the various cylinders of: the engine. Fig. 7 is a diagram showing a modification.

Referring to the drawings, the numeral 1 designates the radiator of an automobile, 2 the dash-board and the motor or explosive engine, the same here illustrated as being a four-cylinder type.

As is usual, connected to the radiator and the dash-board 2, is a rod l, said rod 4 being disposed longitudinally of and above the motor 3 and providinga means for the attachment of the bands 5 which support the priming charge retaining tank or reservoir 6, in the position as clearly shown in Fig. 1. This tank or reservoir, as clearly shown in Fig. 2, is provided with a filling port 7, which has detachably connected thereto, the safety valve casing 8, which is readily removed to permit oi the introduction of the fluid hydrocarbon within the tank 6, although the tank may be automatically filled and which as will presently appear, provides a means for relieving the pressure within the tank should the same exceed the maximum pressure necessary for the proper operation of the mechanism.

, A screw threaded port 9-1s provided in the upper portion of the tank and has connected tnereto. the coupling or nipple 10 having the header 11 which is a. four-way coupling attached thereto, and by means of which the necessary air pressure is supplied to the tank 6.

In order to provide a means for supplying pressure to the tank 6, a coupling 17 is connected to the upper outlet of the coupling 11 and has led thereto a flexible conduit 18, which is connected to the supply end of the manually controlled. pump 19 secured upon the dash-hoard of the motor car. This pump is of such a construction that the air is supplied upon the down stroke. the same being provided with a check valve to prevent the back pressure. of the same from the tank 6, a manually controlled valve 20 being disposed at the outlet of the pump so that the conduit 18 may be isolated therefrom when desired.

In the lowermost portion of the tank 6 and extending in longitudinal alinement, are the respective ports 2l-21 and 22-22, the same being grouped in pairs, to accommodate the actuation of the cylinders of the engine, which in the present instance as stated, is a four-cylinder type, constructed to have the cylinders operate in pairs.

Disposed. in each of the respective outlets 2l2l and 2222 are the plugs 23, each of which is constructed. similarly and carries concentrically therewith the air and fluid supplying tube 24. which is sealed at its upper end at as clearly shown in Fig. 3, and is provided with the air inlet ports 26 adjacent the upper end, and the lower fluid inlet port 27. It is desirable to provide the best possible mixture before supplying the same to the respective cylinders of the engine, and in order to accomplish this, the mixture is preferably 16 to 1, that is sixteen parts of air to one part of the fluid and thus the perforations or ports 26 have such combined area as relates to the port 2"? and may be positioned in any way and formed in such manner as to permit of the introduction into the upper end of the tube 24: of sixteen times the quantity of air to the fluid furnished through the port 27 at the lower end of the tube. These ports 26 may be positioned in one side of the tube, as shown in F ig. 3, or may be formed diametrically opposite, as found most expedient.

Leading from the lower end of the respective couplings or plugs 23, is a union 23, which has depending therefrom, the vertical pipe 29 carrying the lower union 30. Each of these unions 30, as clearly shown in Fig. 2, are properly connected to their respective valve casings which in the present instance, are numbered. in pairs 3l3l and 3232.

Mounted in each casing 31 is a valve 33, while in each casing 32, is mounted a valve 34 and when these valves are in a normal closed position, they are held, as clearly shown in Fig. 6. As the bore or channel of the pipe 29 is merely a spraying channel, the amount of liquid fuel therein and up to the fuel level of the tank does not to any great extent cause the admission of too rich a mixture through the valve 33 at the initial injection. of the priming charge. The pipe 29, however, is as a rule dispensed with and the connection made directly from the lower end of the tube 24 with the valve 33. When it is desired to charge the two outer cylinders, the valves are moved to assume the position, as shown in Fig. 5, at which time, the valves are open, while the valves 3l-3t are closed. When it is de sired to prime the two intermediate cylinders, the valves are moved to assume the position in Fig. l-, wherein the valves 3333 are closed and the valves 3434 are open.

.ln order to accomplish the manipulation or operation of the respective valves as illustrated in the diagrams shown in Figs. 4:, 5 and 6, each valve is provided with the stem 35 and the operating crank 36, there being in this instance, four stems 36 each'one of which has its respective free end pivotally connected to the oscillatory bar or plate 37, which is extended. as clearly shown in Fig. 1, through the clash-board and has its inner end o-perably connected to. the lower end of the lever 38, which is mounted in the fulcruming bracket 39 and is provided with the hand grip 40. It will thus be seen that when the valves are in the position as shown in Fig. 6, that the handle 38 will be in its vertical position and in order to accomplish this, a spring 40 may be connected to the lever 38 or to the plate 37 to maintain the parts in this position when released by the operator. It is also apparent that any form locking means may be provided to position the lever in a vertical position without departing from the spirit of the present invention. It will thus be seen that when it is desired to prime the two intermediate cylinders and cause the valves to assume the position as shown in Fig. 4, that the lever 40 will be pushed toward the dash board so that its lower end will move away from the dash-board and cause the arms or cranks 36 of the respective valves to assume an extreme forward position as illustrated in dotted lines Fig. 4:, and when it is desired to prime the two outermost cylinders and cause the valves to assume the position as shown in Fig. 5, that the lever 40 will be manipulated in opposite extreme position or pulled outwardly to cause its lower end to be moved inwardly and thus cause the cranks 36 of the respective valves to assume the dotted line in Fig. 5.

As shown in Fig. 7, an apparatus for furnishing air for the petrol tank, for blowing position, as shown a horn and for inflating tires, is provided.

In this instance, the tank 43 is provided with partition 44, which divides the tank into the air storage chamber L5 and the petrol or gasolene chamber 46. Connected in the chamber 45 is a coupling 47, to which is led the check valved air supply pipe 4:8, receiving air from the pump 49. This pump is operated by the crank shaft 50, which carries the friction wheel 51, which in turn receives motion from the fly wheel 52 of the motor 3. Thus compressed air is continuously fed to the chamber l5. A check valved conduit 53 is led from the coupling 47 to the chamber -l6, and such valve is arranged to permit pressure up to a prede termincd amount to enter the chamber 4:6. A. gage E2 through the pipe 41 is connected to the coupling *7, as is also the safety valve 8. A, pipe 5-il is led from the coupling l7 to the horn 56, a. manually controlled valve 55, being provided so that the horn can be operated at will. The valve controlled pipe 57 is also connected to the coupling L7 and provides means for inflating tires of an automobile.

In order to provide a means whereby the operator or chauffeur may know at a glance the pressure within the tank 6, an outlet 4:1 is led from the coupling 11 and has connected thereto, the pressure gage 42 positioned as clearly shown in Fig. 1, in a readily discernible position upon the dash-board 2 of the motor car. By this means, the amount of pressure within the tank is always indicated and when the pressure has attained the desired amount, the manually operated valve 16 may be closed to thus prevent the admission of pressure through the check valve 15 into the tank 6. This in some cases may not be necessary and can do no great harm should the valve 16 not be manipulated, as the safety valve 8 will relieve the pressure when the same has exceeded the predetermined amount within the tank 6.

It is evident from the foregoing, that any means may be provided for automaticallysupplying the explosive hydrocarbon fluid to the tank 6 from the usual supply tank of the motor car, and also that pipes may be led away from this tank to supply the burners of the various lamps upon the motor car, and thus produce in connection or combination with the tank 6, a lighting system as well as a priming system. In the present instance, however, the safety valve 8 is removed entirely from the tank, a relief valve 8 being provided to relieve the pressure within the tank during the removal of the cap 7 carrying the safety valve 8 whenyit becomes necessary to fill the tank after the fluid charge has been exhausted.

It is also apparent that the tank 6 may be positioned in any desirable place with relation to the engine, the same being herein shown as positioned in the most desirable place for motor ars.

What is claimed is:

1. The combination with an explosive engine, of a priming device therefor, including a priming fluid holding reservoir, :1 conduit for directing a charge to the engine leading from the reservoir, a manually controlled valve mounted in the conduit, means for supplying air pressure to the reservoir, and a cimduit within the reservoir forming a continuation of the first conduit, the last mentioned conduit being provided with a fluid admission port in its lower end Within the reservoir and an air admitting port at its upper end, whereby a carbureted air is supplied through the conduits to the engine.

'3. The ooml'iination with a multi-cylinder explosive engine, of a priming device therefor, including a priming fluid holding reservoir, a conduit for each cylinder leading from the reservoir to its respective cylinder, a valve mounted .in each conduit, manually controlled means for actuating the valves in pairs so that two cylinders at a time will be charged, and a conduit withinthe reservoir and forming a continuation of the first mentioned conduit, there being one to each of the first mentioned conduits, said conduit within the reservoir being provided with a fluid admission port in its lower end and with an air admitting port at its upper end, whereby carburetcd air is supplied through the conduits and valves to the engine.

2). The combination with an explosive engine, of a priming device therefor, including a priming fluid holding reservoir, a conduit :for directing a charge to the engine leading from the reservoir, a manually con trolled valve mounted in the conduit, means for supplying air pressure to the reservoir, a conduit within the reservoir forming a continuation of the first conduit, the last mentioned conduit being provided with a fluid admission port in its lower end within the reservoir and an air admitting port at its upper end, whereby carhureted air is supplied through the conduits to the engine, and a check valved conduit connected with the cylinder of the engine and the reservoir for supplying pressure from the cylinder to the reservoir.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

MARY PIERSON MITCHELL.

WVitnesses:

S. 13.. Foos, C. G. Foos.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, .D. G. 

